Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '5df7b182a578f9dc180a2945822b38f2f996a1f5833ba5f384979891b11e98ad' 
  AND token = 'X+i9vS2QrkcaruzYVTp+Ut0oLnyLsBNDf/X7moidm1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}